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Label:The troops of the Fourth Pennsylvania Cavalry were mustered into service between August and October of 1861, under the leadership of commanding officer Colonel David Campbell, with orders to assist in the defense of Washington, D.C. The regiment's military successes were notably attributed to Colonel Campbell's strict discipline and personal supervision of drills, parades, and guard mounts, evident in this painting. The Fourth Pennsylvania Cavalry went on to serve in the Battle of Gettysburg, the Wilderness Campaign, two of Sheridan's raids, and the Appomattox Campaign, and were present at Lee's surrender at the Appomattox Courthouse on April 9, 1865.